These tests should be skip/docker, but the test
playbook also redundantly checked whether it was
running in a docker container.
Checking whether `ansible_facts.distribution` is
`FreeBSD` is really sufficient to be sure whether
the test is running in an environment that supports
the `pkgng` module.
Had been using bash package, because it's not
likely to disappear from the package repository
any time soon. Turns out that bash is already
installed on the Ansible community.general
FreeBSD CI VM image, which makes the test fail.
Zsh probably isn't going away any time soon,
either, and likely won't be installed on the
CI image.
